public class Demo1 {

    public static void main(String[] args) throws InterruptedException {


        Thread t = new Thread(() -> {

            for (int i = 0; i < 5; i++) {
                System.out.println("hello thread");
                try {
                    Thread.sleep(1000);
                } catch (InterruptedException e) {
                    throw new RuntimeException(e);
                }
            }
        });

        t.start();
        t.join(3000);
        System.out.println("hello main");
    }

}
